Road working or grading machine.



'1NR 734,632. f DATRNTDD JUDY 2a, 1903:.

- A.' TANK.

j RoAD WORKING 0R GRADING MAGHINR.

APPLICATION FIQBD JULY .31, 1902.

No MODEL. s :DBNL-sum1 1.V

IIIIIIIIIIIIIIHIIIH 1 W A ZIV 20 mi nllmlnllllnlunnmll Noi. 734,632.- RA'IRNTRN JULY 2a, "19mm` ARIANK.

RoAD WORKING 0R GRADING MACHINE. APPLICATION FILED JULY 31. 1902. N0 MQDEI. 3 SHEETS-SHEET 2;.

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PATENTED JULY 28,1903.

No. 734.632. A

A.. P. TANK.

ROAD WURKING 0R GRADlNG MACHINE.

VAPPLIGA'IION FILED JULY 31, 1902.

3 SHEETS-SHEET 3.

NO MODEL.

Patented July 28, 1903.

AUGUST F. TANK, OF SNOVER, MICHIGAN.

RoAD WORKING foR GRADING MACHINE.

SPECIFICATION routing part of Letters 1Patent. Nq. 734,632, dated Juiy 2e, 190e.

icient mechanism for adjusting the scraper- L blade to theseveral positions necessary in order that it may meet the varying requirements of the surface being operated upon.

The preferred embodiment of the invention is fully illustrated in the accompanying drawings and is described in the followi-ng'specitication.

In the drawings, Figure 1 is a top plan Viewl of the machine. Fig. 2 is a side elevation of the same. Fig. 3 is a longitudinal sectional View. Fig. 4 is a cross-section taken on the line of Fig. 3. Fig. 5 is also across-SeelV tional View taken on the line y y of Fig. 3.

Fig. 6 is a vertical sectional view through4 the turn-table. Fig. 7 is a horizontal sectional view through the same. Fig. 8 is a perspective view of the locking mechanism for the rotatable ring, said mechanism being shown detached from its support. Y

Similar numerals of reference indicate corresponding parts in all the figures of `the drawings. f

In the embodiment of the invention a sup-` porting-frame is employed, comprising spaced side beams lO, connected at their front ends by a cross-beam 1l, the rear endsbeing pro-` vided with standards 12 andintermediate depending ears 13, said standards and ears supporting a platform 14, which issecured thereto and-extendsacross the space between the side beams 10. mounted at its front end upon a bolster 15, to the underside of which is pivotally attached the frontA axle `1G, havingwheelsl1 journaled upon its ends. A rear` axle 18 is slidably mounted in openings 19, formed in the lower portions of the standards 12, the said axle being provided with the usual wheels 20. Rollers 2l are journaled in the upper portions of the openings19 and constitute bearings for the Appiieation filed July si, 1902.`

This supporting frame is sein No. 117,835. oto man.)

,axle 18, as clearly shownin 4. Secured `to the lower portions of the standards 12 andarranged parallel to the axle 18 is a rack-bar more provided with a pinion 27, meshing with the rack 22, In order to hold the shaft against rotation, adog 28 is pivoted upon theouter end of the bracket and engages a toothed Wheel 29,*secured to thc shaft. It will thus be seen that by operating the shaft the frame can be moved back and forth uponv .the hind axle, and the rollers will reduce the friction of such movement to a minimum.

In connection with the above described supporting-frame there is employed a carrierframe consisting of spaced bars 30, which converge toward their front ends, these barssupporting at their rear ends a turn-table, (designated as a whole bythe reference-numeral 3l.) Theturn-table is constructed as follows: A track is employed comprising a web 32, having at its upper and lower edges horizontal flanges 33, which project on opposite sides of said web, the space between the inner portions of the [langes constitutinga guideway in which is rotatably mounted a ring 34. `The outer portions of the iianges 32 embrace the d raw-bars 30 and are suitably secured thereto.

The rotatable ring 34 carries a pair of spaced cross-bars 35, which extend across the space Within the same and constitute supports for a rack-bar36 in the form of a ring, having its teeth 37 arranged uponthe inner4 edge of the same, all of which is illustrated in Fig. 7. The ring 34, furthermore, Vcarries vertical `-rollers 38, which bear against the inner faces `of the web 32 to prevent friction.

The ring is rotated by means of an upright shaft 39, journaled in a suitable bracket 40 andhaving a pinion 41 on its lower end', which meshes with the rack, the upperend being `provided with an operating-wheel 42. p Means are also employed for locking the' ring '34 against'rotation, these means being in the form of bolts 43, slidably mounted upon the under side of the cross-beam 44, secured to the circular An upright bracket 234is secured IOO upon the shaft 60.

track and extending diametrically across the space within the same. The bolts are mounted in suitable ears 45, and their outer ends are' arranged to engage in notches 46, formed in the inner edge of the ring. They are connected at their inner ends to the outstanding arms 47 of a T-lever 48, pivoted to the under side of the cross-bar 44, the free end of the remaining arm 49 of said T-lever being attached, by means of a link 50, to an actuatinglever 5l, that is suitably mounted upon the bracket 40. To the cross-bars of the ring 34 are attached hangers 52, which carry at their lower ends the scraper-blade 53. As a result of the above-described mechanism it will be seen that this scraper-blade can be readily reversed or moved to any angle desired by rotating the shaft 39, and it may be securely locked in its adjusted position through the medium of the sliding bolts 43, which are engaged in the alined notches 46 of the ring. The front end of the carrier-frame is vertically adjustable, and to this end a substantially U-shaped upright post 54 is attached to the front portion of the machine. Between the front ends of the draw-bars 30 there is secured a boxing 55, while a stirrup 56 embraces the post, said stirrup carrying a roller 57, which bears against the front faces of the post. The stirrup and boxing are connected by a pivot-bolt 58, which projects at its forward end into the hollow portion of the post, as clearly shown in Fig. 3. A winding-drum 59 is journaled upon the upper portion of the post, being formed by the end of the horizontal shaft 60, which is arranged upon the forward portion vof the supporting-frame. A flexible chain or cable 6l is secured at one end to the projecting end of the pivot 58, the other end being wrapped upon and secured to the drum 59. This drum is rotated by means of a longitudinally-disposed shaft 62, having at its rear end a suitable handle 63 and at its front end a beveled gear 64, meshing with a similar gear 65, arranged It will therefore be apparent that when the handle 63 is rotated the shafts 62 and 60 will also be revolved, and consequently the front end of the carrierframe will be raised or lowered. The swivel connection between said frame and the stirrup 56 will also permit the frame to be tilted upon its longitudinal axis. The means for accomplishing this tilting movement will now be described.

A pair of spaced journal-blocks 66 are secured to the rear portions of the side beams 10, and upon the outer sides of said blocks are arranged gear-wheels 67, which gears carry crank-arms 68. These crank-arms are respectively attached to the rear ends of the draw-bars 30 by means of links 69. Through theupper portions of the journal-blocks pass stub-shafts 70, carrying on their ou er ends pinions 7l, meshing with the gear-wheels 67,

the inner ends of said shafts being provided with hand-wheels72, which are thus located ydraw-bars 30 of 'the carrier-frame.

directly over the platform 1'4. Thus should it be desired to raise or lower either or both sides of the scraper it is only necessary to rotate one'or both of the hand-wheels 72 in the proper direction, whereupon the crank-arms 68 will be raised or lowered and the corresponding sides of the scraper-frame will be likewise moved. There is also employed in this machine means for moving the carrierframe and the mechanism supported thereon laterally, and to this end there is journaled in the lower ends of the brackets 13 a horizontal screw 73, one end of the screw having a beveled gear 74, which meshes with a similar gear 75, arranged upon a suitable actuating-shaft 76, that extends diagonally upon one side of the frame, as shown in Fig. 2. Guide-rods 77 are arranged upon opposite sides of the screw 73 and in parallel relation thereto, said rods being attached to the brackets 13. An adjusting-block 78 is slidably mounted upon the guide-rods 77 and is provided with a central threaded opening through which the screw passes, the threads of said screw engaging the threads of the opening. A link 79 connects the block with one of the Thus it will be apparent that when the shaft 76 is rotated the screw being revolved will .move the block 78, and thus the carrier-frame will be swung laterally with relation to the machine.

From the above description it will be apparent that the mechanism for adjusting the position of the scraper-blade toits various positions and the means for holding it in such positions are very simple and eiective. Furthermore, all the actuating mechanism is under the direct control of an operator standing upon the platform 13 of the machine.

From the foregoing it is thought that `the construction,operation,and many advantages of the herein-described invention will be apparent to those skilled in the art without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine of the class described, the combination with a post, of a carrier-frame, a boxing secured to the frame, astirrup surrounding the post, a pivot connecting the stirrup and boxing, and means for raising the carrier-frame, said means being attached to the pivot.

2. In a machine of the class described, the combination with a post, of a carrier-frame, a boxing secured to the frame, a stirrup surrounding the post, a pivot connecting the stirrup and boxing and projecting within said stirrup, a drum journaled upon the upper end of the post, and a flexible connection secured IOO IIO

at one end to the projecting portion of the pivot and having its other end secured to and wrapped upon the drum.

3. In amachine of the class described, the combination with a carrier-frame, of a circular track having a guideway in its inner face,

l a ring rotatably mounted in the guideway of the track and having a rack on its inner side,

a scraper attached to the ring, and a shaft having a pinion meshing with the rack.

4. In a machine of the class described, the combination with a carrier-frame, of a circular track having a guideway in its inner face, a ring rotatably mounted in the guideway of the track, means for` rotating the ring, a scraper attached to the ring, and means engaging the ring ,to hold it against movement.

5. In a machine of the class described, the combination with a carrier-frame, of a ring rotatably mounted on the frame and carrying a scraper, said ring having notches, means for rotating the ring, and a sliding bolt arranged to engage in the notches of the ring to hold it against rotation.

6. In a machine of the class' described, the combination with a carrier-frame, of a ring rotatably mounted on the frame and having a plurality of notches, a scraper attached to the ring, a pivotally-supported T-lever, sliding bolts connected to the two arms of the lever and engaging the notches of the ring,

and an actuating device attached to the other arm of the lever. l

7. In a machine of the class described, the combination with a carrier-frame, of a circular track secured thereto and having a guideway in its inner side, a ring rotatably mounted in the guideway, rollers carried by the ring and engaging the track, means for ro` tating the ring, and a scraper carried by said ring.

8. In a machine of the class described, a carrier-frame having spaced draw-bars, a circular track secured thereto and comprising a web having anges on its upper and lower edges that project on opposite sides of the web, the outer sidesof the flanges embracing the draw-bars, a ring rotatably mounted between the inner portions of the flanges, a

scraper carried by the ring, and means for rotating the ring.

9. In a machine of the class described, the combination with a carrier-frame, of a circular track secured thereto and having a guide way in its inner side, a cross-bar extending across the space withinv the circular track, a ring rotatably mounted within the track and engaging the guideway thereof, a scraper se-` cured to the ring, a circular rack-bar also attached to the ring and having a rack on its inner fside, a shaft' carrying a pinion that meshes with the rack, and a locking device carried by the crossLbar of the track and engaging the ring.

10. In a machine ofthe `class described, the combination with a supporting-frame, of a carrier-frame pivotally connected with the supporting-frame, and means for swinging the carrier-frame upon its pivot, said. means comprising a rotatable screw, a block having a threaded opening which receives the screw, and a connection between the block and the carrier-frame.

11. In a machine of the class described, the combination with a supporting-frame, of a carrier-frame pivotally connected with the supporting-frame, and means for swinging the carrier-frame upon its pivot, said means comprising a rotatable screw, a block having a threaded opening which receives the screw, a connection between the block and the carrier-frame, and means for rotating the screw.

12. In a machine ofthe class described, the combination with a supporting-frame, of a carrier-frame pivotally connected with the supporting-frame, and means for swinging the carrier-frame upon its pivot, said means comprising a horizontal rotatable screw, a guide arranged parallel to the screw, a block having a threaded opening which receives the screw, said block .engaging the guide, and a link connecting the block and the carrierframe.

13. In a machine of the class described, the combination with a supporting-frame, of a carrier-frame pivotally connected with the supporting-frame, and means for swinging the carrier-frame upon its pivot, said means including depending ears carried4 by the sup,

block slidably mounted upon the guide-rod.

and having a threaded opening which receives the screw, and a link connectionbetween the block and the carrier-frame. Y

14. In a machine of the class described, the combination with a supporting-frame having spaced side bars, of a carrier-frame movably mounted beneath the supporting-frame, and means for raising and lowering the carrierframe, said means comprising gear-wheels journaled upon the side bars and carrying crank-arms that are located in substantially parallel relation to said bars, operating-shafts journaled transversely upon the side bars and having pinions which mesh with the gearwheels, and connections between the crankarms and the carrier-frame.

15. In a machine of the class described, the combination with a relatively movable supporting-frame and axle, of a rack-bar secured to the frame against longitudinal movement thereon, an operating-shaft rotatably mounted upon the axle and held against lateral `movement with relation thereto, and apinion secured to the shaft and engaging the rackbar of the frame.

16. In a machine of the class described, the

combination with a relatively movable supporting-frame and axle, of a rack-bar secured to the frame against longitudinal movement ICO IIC

In testimony that I claim the foregoing as my own I have hereto axed my signature in l the presence of two witnesses.

AUGUST F. TANK.

Witnesses:

JAMES MINARD, CHAS. L. MINARD. 

